Active clinical trials for "Stomach Neoplasms"

The incidence of complications after gastrectomy remains high among elderly patients with gastric cancer. The investigators sought to establish and validate a web-based nomorgam for predicting total complications among elderly patients undergoing resection of gastric cancer.

Laparoscopic D2 lymph node dissection (LND) for gastric cancer has a wide range of operations and a high degree of difficulty.The purpose of this study was to evaluate the relationship between clinicopathological factors and the difficulty of laparoscopic D2 LND.

Infrapyloric artery(IPA) is of great importance for gastric cancer patients. According to previous study, the origin of IPA varies greatly among different studies. This trial aims to tell the distribution of IPA origin in Chinese patients.

The aim of the present study was to evaluate characteristics of background mucosa in early gastric cancer (EGC), and to seek for the optimal assessment for EGC screening.

Peritoneal metastases appear in a great proportion of patients affected by gastric carcinoma. Involved mechanisms are poorly understood though experimentally it has been demonstrated that neoplastic cells exfoliated from primary tumor can only implant and proliferate in areas of damaged peritoneum. Objectives: to study ultra-structure of peritoneal surface by electronic microscopy in control subjects and in patients with early or locally advanced gastric cancer looking for spontaneous changes in peritoneal surface not related with surgical injury.

Videoendoscopy is the standard tool for examination of gastrointestinal tract. However, precancerous lesions and early gastric cancer can be easily missed by routine videoendoscopy. Autofluorescence Imaging (AFI) and Narrow band imaging (NBI) are 2 new imaging systems used in endoscopy which are recently developed. AFI based on the presence of natural tissue fluorescence on the gastrointestinal tract. By computation of the difference in the reflecting images, the system can reveal early cancers that are not detectable by standard endoscopy. NBI is a high resolution imaging using lights with narrowed wavelength range, which able to enhance the fine structure of the mucosa. Recent studies suggested combined AFI and NBI can improve the detection of early esophageal and gastric cancers. The investigators are conducting a prospective randomized cross-over study to compare the accuracy between this combined AFI/NBI imaging with standard videoendoscopy in the detection of precancerous lesions and gastric cancer in a high risk population inSingapore. The investigators hypothesis is that this new combined imaging system improves the investigators detection of high risk lesions of stomach.

To assess the role of germline polymorphisms in xenobiotic metabolism genes in toxicity profile. To assess the role of germline polymorphisms in genes associated with DNA repair, p53 tumor suppressor gene and angiogenesis pathway in predicting recurrence and survival in gastric cancer patients treated with adjuvant chemotherapy.

The goal of this study is to study NIS expression in benign and malignant breast and thyroid samples using archival formalin-fixed paraffin-embedded tissue sections.

The pattern of lymph node metastasis of the gastric cancer to each geographic lymph nose stations and the relation between each metastasis and survival are to be analyzed by retrospective review of medical records of who enrolled in the CLASSIC trial (NCT00411229) which have compared adjuvant chemotherapy and no adjuvant therapy after radical gastrectomy with extended lymphadenectomy.

Despite the declining incidence, gastric cancer (GC) remains the second leading cause of cancer death worldwide. In France, it is the second digestive cancer with 7,000 new cases per year. It is now well demonstrated that patients with H. pylori infection, atrophic gastritis and intestinal metaplasia, have a high risk of developing GC. It is therefore important to detect these pre-neoplastic lesions at an early stage to improve patients prognosis. Thus, the aim of this project is to investigate the possible screening of gastric precancerous lesions by a blood test (GastroPanel®) in France, in patients with oesophagogastroduodenoscopy (EGD) prescription.